Weekly Ratings: ‘Grease Live,’ ‘The X-Files,’ ‘Lucifer’ Keep Fox Hot

Fox opened the week strong Monday with the timeslot debut of “The X-Files” (3.2/10 in 18-49, 9.66 million viewers overall) and the series premiere of “Lucifer” (2.4/7 in 18-49, 7.16 million viewers overall). The former was the week’s No. 1 series in 18-49, and the latter tied with “Rosewood” as the network’s top-rated series premiere of the season.